Gurdwara Bangla Sahib was originally a bungalow belonging to Raja Jai Singh, an Indian ruler in the seventeenth century, and was known as Jaisinghpura Palace
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This Gurdwara is known for its association with the eighth Sikh Guru, Guru Har Krishan ji, as well as the pool inside its complex, known as the "Sarovar" It was first built as a small shrine by Sikh General Sardar Bhagel Singh in 1783, who supervised the construction of nine Sikh shrines in Delhi
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The eighth Sikh Guru, Guru Har Krishan ji resided here during his stay in Delhi in1664. During that time, there was a smallpox and cholera epidemic, and Guru Har Krishan helped the suffering by giving aid and fresh water from the well at this house. Soon he too contracted the illness and eventually died on 30 March 1664.